Question

e Vidya
© 00:31:55
2
.
Single Answer Type
Re
If a – b + c = 0 , then the roots of
ax2 + bx + c = 0, (a + c) are​

Answer 1

Step-by-step explanation:

ANSWER

Roots of the quadratic equation ax

2

+bx+c=0 are imaginary.

⇒b

2

−4ac<0 -----(1)

Now, for the expression a

2

x

2

+abx+ac,

Δ=a

2

b

2

−4a

3

c=a

2

(b

2

−4ac)<0 from (1)

Since, discriminant value is less than zero, coefficient of x

2

and expression always have same sign.

∴a

2

x

2

+abx+ac>0

Hence, option A.